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15 GT. I have the SCT X4. Can someone explian to me how to change my shift points. During take off, my 1st gear is changing by the time I hit 9 mph. way to quick. I want to get the maximum torque and speed out of each gear. Just had it tuned, dyno, and 3.73 gears put in. TUNER said I can change...

I have a 2015 GT with 3.73 gears put in. Question is what is a good shift ratio? 1st-20mph- 2nd-40mph. etc

Question: I had a Roush CAI installed with a ghost cam.. The guy did not put the MAF tube on. When I accelerate from a stop, it has stalled out on me. He said to install the MAF tube on. Is there any video to show hows to "install the MAF tube"?

2015 Mustang GT: So I have been researching E85. From my research I am lead to believe as long as you have stock intake manifold and CAI, you do not need different injectors or anything else to make the switch. Anyone else switch to E85 and not have to make any changes? How much power did it make?

I seem to be having an issue starting my car. Takes two times maybe to stsrt. Sounds like the starter to me and i plugged in my SCT X4 and this popped up

? Should I upgrade to the 18+ or the GT350 intake manifold with the JLT CAI for my 2015 GT? Right now there is a KN CAI and stock manifold.

I Purchased at 2015 mustang GT competition orange. Automatic. The mods that I have done is a cold air intake K/N and an SCT tune. Nothing has been done to the car. What’s the next logical mod that I can do for horsepower? I have read change stock throttlebody to 85 mm. Anyone have experience...